Winding



June 2 5, 194 r WINDING E J. ABBOTT Filed Oct Patented June 25, 1940WINDING Edward J. Abbott, Wilton, N. 11., assignorto Abbott MachineCompany, poration of New Hampshire Wilton, N. 11., a cor- ApplicationOctober 22, 1938, Seth] N0. 236,494

This invention relates to wound packages of yarn and to a method ofwinding, and has for one of its principal objects to provide for a wind-.ing a supply package which will present a tapered or conical noseduring the major portion of the time it is being unwound but which ismore economical of space than prior packages of this;

20 Claims. (01. 242-459) I Fig. 4 is a side elevation showing thepackage at the time the head end portion is partially wound an: the mainbody portion not yet completed; an

Fig. 5 is a similar view of the completed pack- 5 age. It will beunderstood that the package consists of acontinuous yarn or continuousparallel yarns of which the winding is preferably begun on a simple barecore and continued until the completed package of Fig. 5 is produced.

Referring to Fig. 1, the winding is preferably I begun by winding a fewturns (for example about is winding of the major portion of the woundyarn,

the remaining yarn on thebobbin will present a pointed nose from whichthe yarn isunwound. For this reason the typical filling bobbin for usein ten or fifteen) in quick-traversed cross-wound formation in zone a,about inch wide near the base end of a preferably cylindrical core ii.

looms has been wound in successive axially-adi9 vancing conical layerswhich when they stop at V the tip of the bobbin form a pointed end. Thistypical wind has given the desired pointed nose during the unwinding ofthe bobbin in the shuttle but has the disadvantage that it fails to fill85 out about of the space theoretically available for the reception ofthe yarn.

The present invention provides in embodiment for winding a yarn packageon a its preferred core such as a bobbin, with self-sustaining ends 39formed by the yarn alone, of cylindrical outer shape and of cylindricalinner shape if wound on a cylindrical tube, and having the property ofpresenting a conical nose toward the tip of the package as the unwindingof the packageprogresses. Thus about 30% more yarn can be containd inthis package than in the typical filling wound package, and thenecessity for bobbins or cores of complicated shape is avoided.

Other objects of invention and features of ad- 40 vantage and noveltywill be apparent from this specification and its drawing.

In the drawing:

1 is a side elevation of a,'core having the The yarn is then traversedwith a slow traverse from the boundary between the zones 0. and b for ashort distance into the right-hand portion of the middle or main bodyzone b, for example 20 A; inch, and then is slowly traversed back to thezone a. Another ten or fifteenturns of cross winding are then would inthe zone a. The yarn is then slowly traversed from the boundary betweenzones 1; and b slightly farther toward the 25 left of zone b than on theprevious. entry into zone b, and then is slowly traversed back to zonea. This sequence of a number'of turns of quick traverse winding in zonea. followed by slow traversing of the yarn into zone I) for anincreasing 39 distance each time and a return to zone a, is continueduntil the yarn in zone a is built up to the desired full diameter of thepackage-as indicated in full lines in Fig. 2. In Fig. 2 the severaldotted linesindicate successive shapes of the developing 35 packagebefore the base portion in zone a has. reached its full size.

'Ihe winding up to the point shown in full lines in Fig. 2 has thusresulted in forming a conical base upon which successive conical layerscan 49 be laid in filling the main body portion of the first few turnsof winding on it in the production of a package according to thisinvention;

Fig. 2 is a diagrammatic sectional view showing the shape of thepartially wound package at the time its base portion has attained itsfull diameter, and showing in dotted lines preceding 50 forms of thepartially wound package;

Fig. 3 is a similar view showing the shape of the wound package at thetime the winding of its main body portion has progressed to the pointwherethe winding of the head end of the package is about to be begun;

presented by the partially wound middle zone b,

package. In some casesfor instance if the yarn is to be wound on bobbinshaving butt ends'shaped to provide a conical base of the approximateshape of the wound yarn of Fig. 2, the winding up to the point shown inFig. 2 could be omitted.

Following the attainment of the partially wound package of Fig. 2, theyarn is then slowly traversed back and forth across the conical nose 50and as successive layersare" wound the range of traverse-is shifted tothe left so that the package in growing passes through the dotted lineshape ofFlg.3tothefulllineshape ofFig.3andth e 55 most advanced part ofthe conical nose reaches the boundary between zones b and c.

Certain advantages of the invention can be attained if the package isnot carried beyond the form of-Fig. 3, but it is preferred to completethe package as now to be explained.

In the next stage of production of the package the yarn is traversed ina cross wound formation through about or '15 turns within the zone c, atthe conclusion of which the yarn is slowly traversed again on theconical nose of the partially wound portion in zone b, and slowlytraversed back to the zone c. Successive series of 10 or turns of thecross wound yarn are then built up in zone c between the winding ofsuccessive slowly traversed layers of yarn on the conical nose ofthepartially wound zone 17, the length of traverse of the slowly traversedportion being diminished each time at its right-hand end until reachingapproximately zero, so as to .keep the portion 17 within the confines ofa cylindrical shape. In this procedure the growing package passes.through the shape shown in Fig. 4 until finally the cylindrical body ofcross wound yarn in zone 0 has reached the full diameter of thepreviously formed part of the package as shown in Fig. 5, and the mainbody portion b has been completely filled.

The outer end face of the cross-wound headend portion 0 is shown asperpendicular to the axis of the package, although the angle of thisface can be varied if desired to suit special requirements such forexample as a slightly retracted or dished end-face. There is no abruptchange in diameter as between the head end portion 0 and the main bodyportion b, and the head end portionand adjacent part of the main body--maximum capacity since the main body portion 1:

is completely filled with yarn wound with a slow pitch of traverse.

Moreover, the cross-wound end portion in zone c eflectively prevents theyarn from sloughing oif the conically-wound middle portion in handlingand shipment of the package.

The-invention is readily adaptable to winding packages having a somewhatconical shape, which can be most easily accomplished by substituting aconical core for the cylindricalcore of the drawing, whereupon theoutward shape of the resulting package-will change accordingly.

- In unwindingv the package there is no quick variation in the distancefrom thenose of the package at which-the unwinding yarn is pulled.

oil from the surface. Further the package presents a generally pointednose. conical except for the partially unwound cross-wound head fromwhich the yarn is unwoundin thezone c and the partially imwoundcross-wound base from which yarn subsequently imwlnds in the zone a.

- In, the specification and claims, the term cross-wound is intended tomean that the yarn is wound on the package with suilicient angle oftraverse (not necessarily constant) to form a self-sustaining body, notrequiring a spool-head to support its exposed side face, and the term"close-wound is intended to mean that the yarn is wound in a layer alongwhich the yarn is traversed relatively slowly so that the turns of yarnare fnearly at right angles to the axis of the package. y Y I claim:

1. A wound textile strand package having a main body portion of strandwound in generally conical layers advancing in overlapped relationaxially along the package, and a cross-wound end portion formed of thesame strand wound in approximately cylindrical layers.

- 2. A wound textile strand package having a main body portion of strandclose wolmd in generally conical layers advancing in overlapped relationaxially along the package, and a cross-' wound end portion formed of thesame strand and having a self-sustaining outer face approximatelyperpendicular to the axis of the package. 3. A wound textile strandpackage having a main body portion of strand wound in generally conicallayers advancing in overlapped relation axially along the package, and across-wound head portion formed of the same strand, the

conical layers adjacent to the said head portion being of progressivelyshorter length from the interior of the package outwardly, the headportion and the adjacent part of the main body portion havingsubstantially the outward form of a figure of revolution of a straightline about the axis of the package.

4. A wound textile strand package having a .base portion of strand woundin cross-wound layers and a main body portion formed of the same strandwound in generally con'icaLlayers advancing in overlapped relationaxially along the package, the conical layers adjacent to the baseportion being of progressively longer length from the interior of thepackage outwardly until reaching the exterior periphery of the package,the base portionand the adjacent part of the main body portion havingsubstantially the outward form of a figure of revolution of a straightline about the axis of the package.

5. A wound textile strand package having base and head portions each inthe form of superposed cross-wound layers of the same strand and aconical close wound layers advancing in overlapped relation axially fromthe base to the head portion and substantially filling the space betweensaid base and head portions.

6. A wound textile strand package having base and head portions each inthe form of superposed cross-wound layers of the same strand and a mainbody portion of. the same strand lying in conical layers advancing inoverlapped relation axially from the base to the head portion andsubstantially filling the space between said base and head portions, the1 package having substantially the outward form of a figure ofrevolution of a straight line about the axis of the package.

7. A wound textile strand package having a core, a mainbody portion ofstrand wound in close-wound formation in generally conical layers eachsubstantially inclined to the surface of the core, and a cross-wound endportion formed of the same strand in layers approximately par-. allel tothe surface of the core.

' close-wound formation in generally conical laymainj body portion ofthe same strand lying in ers each substantially inclined to the surface01 sustaining outer faceapproximately perpendicu- I lar tothe axis ofthe package.

in close wound formation in a main body zone alternately with aplurality of turns of the same strand in cross-wound formation in a baseend zone, and thereafter winding further conical layers consecutively inthe main body zone.

10. Method of winding a textile strand package comprising windingconical layers of the strand in close-wound formation in a main bodyzone alternately with aplurality of turns of the same strandincross-wound formation in a base end zone while increasing the length ofthe conical layers progressively until the cross wound yarn of the baseend zone attains its full diameter, then stopping the winding in thebase end zone and winding conical layers consecutively in the main bodyzone. a

11. Method of winding a textile strand package comprising winding aplurality of conical layers of the strand in close wound formationconsecutively in a main body zone, then winding conical layers in themain body zone alternately with a plurality of turns of the same strandin cross wound formation in a head end zone. I

12. Method of winding a textile strand package comprising winding aplurality of conical layers of the strand in close-wound formationconsecutivelyin a main body zone, then winding conical layers in themain body zone .alternately with a plurality of turns of the same strandin crosswound formation in a head end zone while decreasing the lengthof the conical layersprogressively until the cross-wound yarn of thehead end zone attains its full diameter.

13, Method of winding a textile strand package comprising windingconical layers of the strand in close-wound formation in a main bodyzone alternately with a plurality of turns of the same strand incross-wound; formation in a base end zone, then winding other conicallayers consecutively in the main body zone, and thereafter windingconical lay'ersin the main body zone alternately with a plurality ofturns of the same strand in cross-wound formation in a head end zone. 7

14. Method of winding a textile strand package comprising windingconicallayers .of the strand in close-wound formation in a main bodyzone alternately with a plurality of turns of the samestrand incross-wound formation in a base end zone while increasing the length ofthe conical layers progressively until the cross-wound yarn of the baseend zone attains its full diameter, then stopping the windingin the baseend zone and winding conical layers consecutively in the main body zone,then windingconical layers in the main body zone alternately with .aplurality of turns of the same strand in cross-wound formation in a headend'zone while decreasing the length of the conical layersprograssivelyuntilthe cross-wound yarn of the head end zone attains itsfull diameter.

15. A wound textile strand package comprising the same strand wound inclose-wound formation in conical layers in a main body zone alternately16. A'wound textile strand package comprising the same strand wound inclose-wound formation in conical layers in a main body zone alternatelywith a plurality of turns of the strand in crosswound formation in abase end zone, the length of the said conical layers progressivelyincreasing from the core outwardly to that of a conical layer having adiameter corresponding to the diameter of the package at the base endzone, and in further conical layers of close-wound formationconsecutively wound in said main body zone.

17. A wound textile strand package comprising the same strand wound inconsecutive conical layers of close-wound formation in a main body zone,and in further conical layers of closewound formation in said main bodyzone wound alternately with a plurality of turns of the strand incross-wound formation ina head end zone. 18. A wound textile strandpackage comprising the same strand wound in consecutive conical layersof close-wound formationin a main body zone, and in further conicallayers of closewound formation in said main body zone wound alternatelywith a plurality-of turns of the strand in cross-wound formation in ahead end zone, the length of said further conical layers decreasingprogressively so as to approach approximately to zero adjacent tothefull diameter of the package at the head end zone.

19. A wound te le strand package comprising the same stran wound inclose-wound formation in conical'layers in a main body zone alternatelywith a plurality of turns of the strand in cross-woundaformaticn in abase end zone,

other conical layers ,of close-wound formation consecutively wound insaid main body zone, and

. woundformation in a head endzone.

20. A wound textile strand package comprising the same strand wound inclose-wound formation in conical layers in a main body zone alternatelywith a plurality of turns of the strand in cross-wound formation in a"base end zone, the length of the said conical layers progressivelyincreasing from the core outwardly to that of a conical layer having adiameter corresponding to the diameter of the package at the base endzone, in other conical layers of close-wound formation consecutivelywound in said main body zone, and in further conical layers ofclose-wound formationin said main body *zone wound alternately with aplurality of turns of thestrand in cross-wound formation in a head endzone,

the length of said last-named conical layers decreasing progressively soas to approach approximately to zero adjacent to the full diameter ofthe package at the head end zone. 2 EDWARD J.- ABBOTT.

